Door-knob compensator.



W. S. TRASK.

7 DOOR KNOB OOMPENSATOR. APPLICATION FILED SEPT.12,1908.

9,35, Patented May 18, 1909.

rs sire.

i nflfttifi fti WILLIAM S. TRASK, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO P. dz F. CORBIN', OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

DQUR-KINDE COllEPEhEMiTOR.

npeeificati'on of Letters Patent.

Patents-ulna 18, EQIOQ.

Application filed. September 12, recs. Serial No. e552,?19.

To all whom it may concern-.-

' Be it known that 1, WILLIAM S. Tease, a. citizen of the United States, residing. at New Britain, county of Hartford, State oi Con necticut, have invented, certain new and use- 111Improvements, in Door-Knob Com ensaoors, of which the following. is a full, c ear, and exact description.

I My invention relates to improvements in means for mounting door knobs and the spindles therefor upon the door, and the object thereof is vto provide compensatingmeans for taking the end thrust of the knobs and s' indle and to hold the spindle against loose ongitudinalplay.

A further object is to provide in the construction above. outlined, means for support ingthe spindle at points removed from the lock, to obviate any rocking movement of the s indle when in position.

A urther object is to so construct and arrange devices of this character whereby friction' between the knobs and spindlesand their supporting parts will be reduced to a minimum.

Y'Vith these objects in view, the invention consists in the construction and arrange-- ment of parts, a preferred embodiment of which is illustrated in the accompanying drawings, in which Figure 1 is a sectional view showing the knobs and spindle assembled upon the door. Fig. 2 is a detail view of parts shown in Fig. 1. Fig. 3 is also a detail view of parts shown in Fig. 1.

In the embodiment of my invention herein selected for illustration, the lock case 1 is indicated in section mounted in a mortise 2 of the door 3, the latter being indicated in dotted outline. Passing through the lock hub 4, which is rotatably mounted in the lock case 1, is the knob spindle 5, which may be of usual rectangular cross section and which has secured thereon in any suitable manner, as by the usual screws, knobs 6. Upon the spindle 5 areslidably mounted flat washers 7, said washers being shown in detail in plan and edge view in Fig. 3, and said washers are preferably provided with. apertures 8 corresponding in outline to the cross section of the spindle 5. These washers 7, as will be noted from an inspection of Fig. I, bear against the opposite ends of the lock hub 4- of the lock and are held thereby out of contact with the sides of the lock case. Also mounted upon the spindle 5 are the short which is apertured at -9 to fit the spindle and has a flange 10' at one end which is normally located (when ail the parts are assembled) just inside ct and slightly removed from the escutcheo'n plate 11. Between each washer 7 and the sleeve 9 and surrounding the spindle' 5 is an expanding device, such as a coil spring. 13, which serves to press apart washer and sleeve. When all the parts are assembled, the outer ends of the sleeves 9 press against the inner ends of the knob shanks.

By the construction above described, it will be noticed that the action of the springs 13 between the washers '7 and sleeves 9 will serve to maintain the latter elements against the lock hub and the knobshanks respectively, whereby loose end play of the knobs and knob spindle will be efiectually prevent ed. Furthermore, inasmuch as the washers, sleeves and springs are all mounted to rotate with the knob spindle, and as the latter is mounted within the look hub at, which is ada ted to rotate in the iock case, substantiall all friction opposi the rotation of the tures in the escutcheon plates within which the sieeves 9 are seated are of such size as to ailord an easy fit and bearing for said sleeves whereby the spindle is rotatably supported at these points in addition to its support within the lock hub at. These three comparatively widely separated bearing points of the spindle effectually prevent any rocking movement thereof. Another distinct advantage of combining in. this particular connection a spring coinpensatin means is that it performs a second function of forcing knobs 6 longitudinally on spindle 5 in such manner as to set up friction between the knob retaining screws by which the knobs are secured to the spindle thus preventing said screws from Working loose and. falling out. in common practice, the knob spindles are provided with a series of screw passages to enable the knobs to be applied to doors of different thickness, that particular screw passage most conveniently located with reference to the screwpas sage in the knob shank being the one selected. While I have here showni and described the Y articular embodiment of the device, it is to e understood that the same may be altered in detail and arrangement of parts without departing from the spirit and scope thereof.

sleeves 9 shown in detail in Fi 2 each of knobs and spindle is eliminated. The aper- What i claim is:

1. In a device of the character described,.

the combination with a lock hub, a knob spindle slidable therein but non-rotatable relatively thereto, a knob ad'ustablymounted {PO11 said spindle an com ensating means between said knob and said ub comprising means for exerting end pressure between said knob and hub tending to force said parts away from each other, and a spacing sleeve between said means and said knob substantially as and for the purpose described.

2. In a device of the character described, the combination with a lock hub, a knob spindle slidable therein but non-rotatable relatively thereto, a knob adjustably mounted upon said spindle and com ensating means between said knob and said ub com- .rising a coil spring surrounding the spindle ior exerting end pressure between saidknob and hub tending to force said parts away from each other, and a spacing sleeve be tween said spring and said knob substantween 0 osite ends of said hub and the knobs, al of said parts adapted to rotate with said s indle.

v 5. In a evice of the character described, a lock hub, a knob spindle mounted therein, escutcheon plates surrounding said spindle, and compensating devices interposed between the ends res ectively of said hub and the knobs carried by said spindle and rotatable therewith, said devices having bearings for rotation in the opposite escutcheon plates respectively said bearings supporting said spindle for side displacement.

6. In a device of the character described, a lock hub rotatable in its lock case, a spindle carried thereby, a compensating device inter osed between said hub and a knob carrie by said spindle, said device comprising a washer bearlng on said hub, a sleeve adjacentthe knob and having a bearing in an 'escutcheon plate surrounding said spindle,

and a'spring interposed between said washer and sleeve.

7, in a device of the character described, a lock hub, a spindle carried thereby, washers mounted upon said spindle, and bearing u on the res ective ends of said hub, sleeves a so mounte upon said s indle adjacent the knobs carried thereby an springs interposed between each Washer and sleeve respectively.

WILLIAM S. TRASK.

Witnesses G. E. Roor, WM. V. COLLINs. 

